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熔體流動速率測試儀口模
熔體流動速率測試儀口模

熔體流動速率測試儀口模

長度: (8.000±0.025)mm或(4.000±0.025)mm

孔徑: (2.095±0.005)mm或(1.180±0.005)mm

材料: 碳化鎢

維氏硬度: 從5 HV到100 HV

標準: ISO 1133、GB/T 3682、GOST 11645

專業熔體流動速率測試儀口模,碳化鎢材質,標準孔徑Φ2.0950.005mm,長度8.0000.001mm。符合ISO1133、ASTM D1238、GB/T3682標準。高硬度、耐磨、耐腐蝕。適用於各種熱塑性塑料的MFR/MVR測試。精度穩定,使用壽命長。
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產品詳情 熔體流動速率測試儀口模

FAQ


1.什麼是熔體流動速率儀口模?

口模是熔體流動速率儀(MFR/MVR測試設備)的核心部件,口模尺寸是否符合標準,直接影響測試結果的準確性。標準口模的標稱長度為8.000mm,內徑為2.095mm。


2.什麼時候使用半口模?

當測試材料的熔體質量流動速率(MFR)>75g/10min或熔體體積流動速率(MVR)>75cm³/10min時,建議使用半口模。半口模長度為4.000mm±0.025mm,孔徑為1.050mm±0.005mm。

重要提示:報告測試結果時,必須注明使用了半口模。


3.什麼時候使用全口模(標準口模)?

對於熔體流動速率≤75g/10min或≤75cm³/10min的常規材料,使用標準口模(全口模)進行測試。標準口模長度為8.000mm±0.025mm,內徑為2.095mm±0.005mm。


4.口模的材質有哪些?

標準口模通常由碳化鎢或硬化鋼製成。對於具有腐蝕性的測試樣品,可選用以下材質:

- 鈷-鉻-鎢合金

- 鉻合金

合成藍寶石

- 其他適合的材料


5.如何檢驗口模是否合格?

定期使用塞規檢查口模內徑,確保其在公差範圍內(±0.005mm)。若出現以下情況,口模需棄用:

- 塞規不可通過的一端可任意穿過孔徑


6.什麼時候需要更換口模?

當口模出現以下情況時,建議立即更換:

- 內徑超出公差範圍(±0.005mm)

- 測試結果出現異常波動,經檢查確認為口模問題


7.口模安裝有哪些注意事項?

- 口模可在料筒中自由移動,但試驗時不得有試樣在口模與料筒之間流動。

- 口模設計不得突出於料筒底部

安裝後,口模孔應與料筒孔同軸


8.口模的最小起訂量是多少?

請聯繫我們的銷售團隊以獲取具體的最小起訂量信息。我們提供靈活的訂購方案,可根據您的測試需求進行定制。

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